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Sailing ship
A sailing ship is a vessel propelled primarily by sails, which carried most world trade and exploration through the Age of Sail until steam took over.
Sailor
A sailor, also called a seaman or seafarer, is a person who works aboard a vessel at sea, in the merchant marine, navies, or fishing fleets.
Sailors' Snug Harbor
Sailors' Snug Harbor is a charitable institution from Captain Robert Randall's 1801 will, whose Staten Island retirement home for aged sailors operated from 1833 to the mid-1970s.
Sailors' superstitions
Sailors' superstitions are the traditional beliefs of seafarers and fishing communities that certain actions, objects, words, or events bring good or bad luck, such as avoiding whistling or Friday sailings.
Salmon-class submarine
The Salmon-class submarine was a class of six United States Navy fleet submarines commissioned in 1937 and 1938, a step toward World War II fleet boats.
Salvage tug
A salvage tug is a large, powerful, seaworthy tug built to perform marine salvage, rescue distressed vessels, and tow disabled ships long distances at speed.
Samsung Heavy Industries
Samsung Heavy Industries is a South Korean shipbuilder that has built LNG carriers, ultra-large container ships, and offshore platforms at its Geoje Island shipyard since 1974.
Samuel Bellamy
Samuel Bellamy, known as "Black Sam", was an English pirate who robbed 53 ships before dying in the 1717 wreck of his flagship Whydah off Cape Cod.
San Antonio-class amphibious transport dock
The San Antonio-class amphibious transport dock, or LPD-17 class, is a United States Navy ship class that lands Marines and equipment ashore by landing craft, amphibious vehicles, and helicopters.
San José galleon
The San José was a Spanish treasure galleon that sank off Cartagena, Colombia, in 1708 while carrying Peruvian silver and gold; its wreck was found in 2015.
Sandeq
The Sandeq, or Lopi Sandeq, is a traditional outrigger sailing canoe of the Mandar people of West Sulawesi, Indonesia, and among the fastest traditional sailboats in the archipelago.
Sanlorenzo
Sanlorenzo is an Italian luxury yacht shipyard founded in 1958 near Florence and headquartered in Ameglia, building made-to-measure motor yachts from 24 to 74 meters.
Santa María (ship)
The Santa María was the flagship and largest of Christopher Columbus's three ships on his 1492 Atlantic voyage, lost on a reef off Hispaniola at Christmas 1492.
Sargo-class submarine
The Sargo-class submarine was a class of ten United States Navy diesel-electric fleet submarines built between 1937 and 1939, named for the lead boat USS Sargo (SS-188).
Scandlines
Scandlines is a privately owned ferry operator running two routes between Germany and Denmark, Puttgarden–Rødby and Rostock–Gedser, operating the world's largest fleet of hybrid ferries.
Scarborough Floating Production Unit
The Scarborough Floating Production Unit is a semi-submersible gas processing facility operated by Woodside Energy off Western Australia, which delivered first gas in July 2026.
Scharnhorst-class battleship
The Scharnhorst class was a pair of German battleships, Scharnhorst and Gneisenau, built in the mid-1930s and armed with nine 28 cm guns; both were out of action by 1943.
Schooner
The Schooner is a North American sailing vessel that emerged in the early 1700s. It was dominant on the Atlantic coast for its fishing and trading.
Scorpène-class submarine
The Scorpène-class submarine is a diesel-electric attack submarine developed for the export market by France's DCN and Spain's Bazán, serving with five navies including Chile, India, and Brazil.
Scuttling
Scuttling is the deliberate sinking of a ship or boat by its own crew, owner, or government, by opening seacocks, flooding compartments, or cutting holes in the hull.
Sea Baby (Морський малюк)
Sea Baby (Морський малюк) is a Ukrainian unmanned surface vehicle packed with explosives, operated by the Security Service of Ukraine and known for striking the Kerch Bridge in 2023.
Sea captain
A sea captain, formally the master of the ship, is the person in overall command of a merchant vessel, responsible for its safe operation, crew, passengers, and cargo.
Sea kayak
A sea kayak is a closed-deck paddle craft for seas, large lakes, and exposed coastlines, distinguished by watertight bulkheads, generous cargo capacity, and rudders or skegs.
Sea Shadow (IX-529)
Sea Shadow (IX-529) was an experimental stealth ship built by Lockheed for the United States Navy to test radar signature reduction and the SWATH hull form, revealed in 1993.
Sea shanty
A sea shanty, also spelled chantey or chanty, is a work song sung by sailors to coordinate group labor aboard merchant sailing ships, flourishing in the 1800s.
Sea trials
Sea trials are the on-water test program for a new or modified ship, demonstrating propulsion, maneuvering, and systems performance against contractual and regulatory criteria before delivery.
Sea Witch (clipper)
The Sea Witch was an American extreme clipper launched in New York in 1846, designed by John W. Griffiths and built for the fast China tea trade.
Sea-class workboat
The Sea-class workboat is a family of modular, multi-role workboats built by Atlas Elektronik UK for the British Royal Navy under Project Vahana, with 35 boats delivered from 2018 to 2024.
Seafarer's professions and ranks
Seafarer's professions and ranks are the occupational titles and positions on a merchant ship, organized into deck, engine, and steward departments under the master, governed by the STCW Convention.
SEAL Delivery Vehicle
The SEAL Delivery Vehicle is a free-flooding wet submersible used by US Navy SEALs to covertly deliver combat swimmers, launched from a Dry Deck Shelter on a submarine.